Campbell Scientific CC5MPX and CC5MPXWD Digital Network Cameras - Manual (Page 85)

11-1
Section 11. PakBus Communications
The camera uses the PakBus protocol to send image files from the camera to
the datalogger or other PakBus compatible devices.
When an image or video file is ready to be transmitted, the camera will initiate
communications and send the image or video via the selected serial interface.
The CC5MPX is capable of producing video files that exceed 30 MB in size.
Trying to send such a large file to a datalogger using PakBus can be
problematic. For this reason the CC5MPX is setup to not send any files using
PakBus that are larger than 2 MB.
The camera is a PakBus Leaf node and is not capable of performing any
routing.
11.1 Concurrent PakBus Communications
PakBus allows the camera to download images to a datalogger simultaneously
with other datalogger communications. A communications task will take
longer if the datalogger is communicating with multiple devices at the same
time.
It may be beneficial to set up the system to avoid image transfers when other
communications are scheduled.
For example, longer connect times on long distance telephone connections can
be avoided by scheduling image transfers from the camera to the datalogger
outside the scheduled data collection time. If a station is called on the hour to
retrieve data, image acquisitions could be initiated before the scheduled call
(15 minutes prior) to shorten the connect times.